| http://www.w3.org/ns/prov#value | - The blades are eccentric with espect to one another with the eccentricity of the blades being such that when oneof the blades is positioned in the path of travel of the sheet the other of the blades is positioned out of the path of travel of the sheet; Means are also provided for cooperating with the blades in their operative position for providing effective cutting or perforating action such as t
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